Side by side

Sugess Seestern S456 GMTvsYema Navygraf Pearl CMM.20

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Seestern S456 GMT
SugessSeestern S456 GMT
MSRP $299
Navygraf Pearl CMM.20
YemaNavygraf Pearl CMM.20
MSRP $1,862

At a glance

13 of 29 specs differ
Diameter
Seestern S456 GMT40mm
Navygraf Pearl CMM.2039mm
Power Reserve
Seestern S456 GMT40h
Navygraf Pearl CMM.2040h
Water Resistance
Seestern S456 GMT200m
Navygraf Pearl CMM.20100m
MSRP
Seestern S456 GMT$299
Navygraf Pearl CMM.20$1,862

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
40mm
39mm
Thickness
13mm
9.75mm
Lug-to-Lug
48.8mm
46mm
Lug Width
20mm
19mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Blue
Pearl
Lume
Tritium
None

Movement

2 specs
Caliber
NH34
Yema CMM.20
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$1,862

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sugess Seestern S456 GMT

Owners widely praise the Sugess Seestern S456 GMT for its excellent case finishing, deep blue sunburst dial, and crisp indices, with one owner rating the overall fit and finish 9.5 out of 10. The watch is noted for its legibility, strong lume that lasts about 4 hours, and accurate timekeeping around -4 seconds per day, with easy GMT hand adjustment. Some owners report issues with a loose or friction-based unidirectional bezel, while others find theirs tight and prefer a bidirectional GMT bezel. The sapphire crystal is described as clear and flat by some, but others find it very reflective with AR coating that could be improved. Sizing is generally considered good at 39mm with a 46mm lug-to-lug and 12mm thickness, though one owner expresses concern about its 49mm lug-to-lug and 41mm bezel diameter. Overall, owners rate the Sugess Seestern S456 GMT highly for its impressive finishing and dial at its price point.

Yema Navygraf Pearl CMM.20

The Yema Navygraf Pearl CMM.20 is praised for its elegant and slim case design, measuring between 9.5mm and 9.75mm thick, and its unique mother-of-pearl dial and bezel. The watch features functional dive watch elements like 200-meter water resistance and is powered by the in-house CMM.20 micro-rotor movement, which offers a 70-hour power reserve and is adjusted to -3/+7 seconds a day. Overall, reviewers highlight the Yema Navygraf Pearl CMM.20's sophisticated aesthetic and slim profile as its primary strengths.

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